Power inside or outside optional
Features:
1. System Capacity
Per system, 4 outdoor camer/CCTV, 5 indoor monitor
2. Digital touch screen with color icon interface
3. Different ring tone setting
Total 12PCS of tone for chosing
Different ring tone for different calling source/panel
Different ring tone for different indoor monitors
4. Different ring tone volume setting
Different ring tone volume for day time and night time
Day/night time setting by user themselves
Different ring tone for different indoor monitors
5. Inner call and intercom call
Support point to point / selective intercom
6. Menu/interface language customization (acceptable)

Extended Function by Adding Accessory
1. Multi-door panel / CCTV by VT-MDS

2. Picture memory function by VT-MEM
Use one unit to let all monitor with picture memory to save cost
We call it as "external public memory unit"
3. Handset optional by HS24
Hand set packed separately with monitor
Ender user can take handset and DIY it to monitor

Compatible outdoor panel list as below:
VTK-video tech
Commax & Kocom & others